<template>
  <div class="tabs">
    <el-tag 
    v-for="(tag,index) in tags"
    :key="tag.name"
    :closable="tag.name !== 'home'"
    :effect="$route.name === tag.name ?'dark' : 'plain'"
    @click="changeMenu(tag)"
    @close="handleClose(tag,index)"
    size="small"
    >
        {{tag.label}}
    </el-tag>
  </div>
</template>

<script>
import {mapState,mapMutations} from 'vuex'

export default {
    name:'CommonTag',
    data() {
        return {

        }
    },
    computed:{
        ...mapState({
            tags:state => state.tab.tabsList
        })
    },
    methods:{
        ...mapMutations({
            close:'closeTag'
        }),
        changeMenu(item){
            this.$router.push({name:item.name})
        },
        handleClose(tag,index){
            const length = this.tags.length - 1
            this.close(tag)
            if(tag.name !== this.$route.name){
                return;
            }
            if(index === length){
                this.$router.push({
                    name:this.tags[index - 1].name
                })
            }else{
                this.$router.push({
                    name:this.tags[index].name
                })
            }
        }
    }
}
</script>

<style lang="less" scoped>
.tabs{
    padding: 20px;
    .el-tag{
        margin-right: 15px;
        cursor: pointer;
    }
}
</style>